Lamp long-endurance control method

Abstract

The invention relates to the technical field of intelligent lighting, and discloses a lamp long-endurance control method, which comprises the following steps: acquiring a battery charging state and a lamp motion state; determining a pulse cluster basic density based on the charging state; according to the motion state, the larger value of the basic density and the preset dynamic safety density is taken, and compensation density is obtained; and adjusting the compensation density by utilizing a space factor according to the gazing direction, generating a final density for the central and peripheral areas of the light-emitting unit, and driving each area to emit light according to the final density. The system comprises a light emitting unit comprising a central area and a peripheral area, a battery, a motion state sensor, a direction sensor and a controller. The time dimension and the space dimension of the light field are cooperatively controlled, the endurance time of the lamp can be remarkably prolonged, and meanwhile the visual stability of a user in a dynamic scene and the illumination quality in a key visual area are effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of intelligent lighting technology, and in particular to a method for controlling the long life of a lamp. Background Art

[0002] For portable lighting, such as headlamps, flashlights, or mobile work lights, battery life is a key performance metric. To extend battery life, existing technologies typically reduce overall power output or use high-efficiency LEDs. However, these approaches are often static and undifferentiated.

[0003] On the one hand, traditional brightness adjustment functions usually require manual operation by users and cannot be adaptively adjusted according to the status of the lamp itself or changes in the external environment. This may lead to unnecessary energy waste when the battery is sufficient, and lack of effective battery life management strategies when the battery is about to run out, which may cause the light to suddenly go out and affect usage.

[0004] On the other hand, some energy-saving technologies use pulse width modulation (PWM) to reduce power consumption. However, at a low duty cycle, if the user or the lamp itself moves, the human eye may perceive flicker or smearing, which is the phenomenon of motion visual discomfort. This seriously affects the experience in dynamic usage scenarios.

[0005] Furthermore, existing lighting methods typically uniformly illuminate the entire area, disregarding the characteristics of the human visual system, which requires high resolution only in the central field of view. This indiscriminate lighting strategy consumes significant energy in peripheral areas where the user isn't looking, resulting in significant energy waste and reduced light efficiency.

[0006] Therefore, the present invention proposes a method for controlling the long life of a lamp to address the deficiencies of the prior art. Summary of the Invention

[0007] In response to the shortcomings of the existing technology, the present invention provides a long-life control method for lamps, which solves the problem that portable lamps are difficult to effectively balance the three goals of extending battery life, ensuring dynamic visual stability, and improving light energy utilization efficiency.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for controlling long-life lighting, the method comprising the following steps:

[0009] S1. Obtain the charging status of the battery of the lamp and the movement status of the lamp;

[0010] S2. Determine a basic density of pulse clusters for prioritizing battery life based on the charging state, and define a dynamic safety density for eliminating visual discomfort caused by motion;

[0011] S3. When the motion state exceeds a preset motion threshold, the basic density of the pulse cluster is merged with the dynamic safety density, and the larger value of the basic density of the pulse cluster and the dynamic safety density is used as the dynamically compensated pulse cluster density; otherwise, the basic density of the pulse cluster is directly used as the dynamically compensated pulse cluster density;

[0012] S4. Obtaining a gaze direction of the user, and determining a spatial factor based on the gaze direction being a central area and a peripheral area of ​​the light-emitting unit of the lamp, and then adjusting the dynamically compensated pulse cluster density using the spatial factor to generate final pulse cluster densities for the central area and the peripheral area, respectively;

[0013] S5. Generate a pulse cluster driving signal according to the final pulse cluster density to drive the central area and the peripheral area to emit light respectively.

[0014] Preferably, in step S1, the step of obtaining the motion state of the lamp includes:

[0015] Acquire acceleration components of the X-axis, Y-axis, and Z-axis through an acceleration sensor, wherein the acceleration components constitute three-axis acceleration data;

[0016] The vector amplitude is calculated based on the three-axis acceleration data, and the vector amplitude is used as the motion state of the lamp. The calculation formula of the vector amplitude is:

[0017]

[0018] Where: A mag is the vector amplitude of the motion state; a x is the acceleration component of the lamp in the X-axis direction; a y is the acceleration component of the lamp in the Y-axis direction; a z is the acceleration component of the lamp in the Z-axis direction.

[0019] Preferably, in step S2, the step of determining the basic density of the pulse cluster for battery life priority based on the charging state includes:

[0020] Obtaining a battery charge status from a battery management unit of the lamp;

[0021] Taking the state of charge as input, a basic density of pulse clusters is calculated using a preset endurance model;

[0022] The dynamic safety density is a preset fixed pulse cluster density value used to ensure visual continuity when the lamp moves.

[0023] Preferably, the formula used by the endurance model to calculate the basic density of the pulse cluster is:

[0024]

[0025] Where: D base is the basic density of the pulse cluster; D max is the maximum basic density; E SoC is the normalized value of the charging state; α is the preset attenuation coefficient; and e is a natural constant.

[0026] Preferably, in step S3, when the motion state exceeds a preset motion threshold, the step of fusing the basic density of the pulse cluster with the dynamic safety density includes:

[0027] The preset motion thresholds include: a motion activation threshold for activating fusion, and a motion deactivation threshold for releasing fusion, wherein the motion activation threshold is greater than the motion deactivation threshold;

[0028] If the motion state is greater than the motion activation threshold, the larger value of the basic density of the pulse cluster and the dynamic safety density is used as the pulse cluster density after dynamic compensation;

[0029] If the motion state is less than the motion inactivation threshold, the base density of the pulse cluster is used as the pulse cluster density after dynamic compensation.

[0030] Preferably, in step S4, the step of obtaining the user's gaze direction, determining a spatial factor based on the gaze direction being the central area and the peripheral area of ​​the light-emitting unit of the lamp, and then adjusting the density of the dynamically compensated pulse cluster using the spatial factor includes:

[0031] Setting a spatial factor for the central region and the peripheral region respectively according to the gaze direction;

[0032] The area pointed by the gaze direction has a set spatial factor value greater than the set spatial factor value of another area;

[0033] The final pulse cluster density of the central area and the final pulse cluster density of the peripheral area are calculated respectively. The calculation formula of the final pulse cluster density is:

[0034] D final =D comp ×C gaze ;

[0035] Where: D final is the final pulse cluster density; D comp is the pulse cluster density after dynamic compensation; C gaze The spatial factors are set for the central area and the peripheral area respectively, wherein the spatial factor value for the central area is greater than the spatial factor value for the peripheral area.

[0036] Preferably, in step S5, the step of generating a pulse cluster driving signal according to the final pulse cluster density includes:

[0037] determining the number of pulse clusters generated per unit time based on the final pulse cluster density;

[0038] Each pulse cluster in the pulse cluster driving signal is composed of one or more micropulses with a duration of microseconds and a subsequent dark time, during which no driving current is provided to the light-emitting unit;

[0039] The light emitting unit is a multi-spectrum light emitting unit.

[0040] Preferably, in step S5, the steps of driving the central area and the peripheral area to emit light respectively include:

[0041] Obtaining health status information from a battery management unit of the lamp;

[0042] encoding the health status information into a set of microscopic time-domain structure parameters;

[0043] The time intervals between the multiple micropulses in each pulse cluster in the pulse cluster driving signal are modulated according to the microscopic time domain structure parameters.

[0044] Preferably, in step S5, the step of driving the central area and the peripheral area to emit light separately further comprises:

[0045] Setting a first spectrum composition having a higher color rendering index for the central area;

[0046] Setting a second spectrum composition with higher luminous efficiency for the peripheral area;

[0047] The central region is driven to emit light according to the first spectrum composition, and the peripheral region is driven to emit light according to the second spectrum composition.

[0048] The present invention also provides a long-life control system for a lamp, the system comprising:

[0049] A light-emitting unit comprising a central area and a peripheral area; a battery; a motion state sensor; a direction sensor; and a controller configured to:

[0050] Acquiring the charging state of the battery and the motion state of the lamp sensed by the motion state sensor;

[0051] Determining a base density of pulse clusters for endurance priority based on the state of charge, and defining a dynamic safety density for eliminating motion visual discomfort;

[0052] When the motion state exceeds a preset motion threshold, the basic density of the pulse cluster is merged with the dynamic safety density, and the larger value of the basic density of the pulse cluster and the dynamic safety density is used as the dynamically compensated pulse cluster density; otherwise, the basic density of the pulse cluster is directly used as the dynamically compensated pulse cluster density;

[0053] Obtaining a gaze direction of the user sensed by the direction sensor, and determining spatial factors for a central area and a peripheral area of ​​the light-emitting unit according to the gaze direction, and adjusting the dynamically compensated pulse cluster density using the spatial factors to generate final pulse cluster densities for the central area and the peripheral area respectively;

[0054] A pulse cluster driving signal is generated according to the final pulse cluster density to respectively drive the central area and the peripheral area to emit light.

[0055] The present invention provides a method for controlling the long life of a lamp. It has the following beneficial effects:

[0056] 1. By directly linking the basic density of pulse clusters to the battery's state of charge, this invention systematically and smoothly reduces the lamp's basic energy consumption as the battery level decreases. This mechanism effectively extends the lamp's operating life and prevents sudden light failure when the battery is depleted, providing predictable operating performance.

[0057] 2. This invention addresses the visual stroboscopic effect that can occur when a user moves in low-power pulse mode by setting a dynamic safety density and, when detecting that the lamp's motion exceeds a threshold, using the larger of the base density and the dynamic safety density as the output. This solution ensures visual stability in dynamic scenes, achieving an effective balance between extending battery life and ensuring a dynamic user experience.

[0058] 3. This invention divides the light-emitting units into a central area and a peripheral area. Based on the user's gaze direction, a higher pulse cluster density is allocated to the gaze area and a lower density to the non-gaze area. This spatially-based light field energy distribution strategy concentrates energy at the user's visual focus, reducing unnecessary energy consumption in peripheral areas. This maintains lighting quality in critical areas while further reducing the overall power consumption of the system.

[0059] 4. This invention sets different spectral compositions for the central and peripheral areas, using a spectrum with a higher color rendering index for the central area where detail needs to be discerned, while using a spectrum with higher luminous efficiency for the peripheral areas that provide environmental awareness. This coordinated control of the spectral and spatial distribution of the light field ensures the use of the most optimized light energy form in different areas with different visual requirements, achieving significant energy savings without compromising mission-critical lighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 This is a structural block diagram of the long-life control system for lamps of the present invention;

[0061] Figure 2 This is a flow chart of the long-life control method for lamps of the present invention;

[0062] Figure 3 is a schematic diagram of a pulse cluster driving signal of the present invention;

[0063] Figure 4 Schematic diagram of the area division of the light-emitting unit of the present invention;

[0064] Figure 5 Schematic diagram of the relationship between the pulse cluster basic density and the battery charging state of the present invention.

[0065] Among them, 10, controller; 20, battery; 21, battery management unit; 30, motion state sensor; 40, direction sensor; 50, light-emitting unit; 51, central area; 52, peripheral area. DETAILED DESCRIPTION

[0066] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0067] Reference Figure 1 , Figure 1 The present invention provides a long-life control system for lamps, which may include a controller 10, a battery 20, a motion state sensor 30, a direction sensor 40, and a light-emitting unit 50.

[0068] The controller 10 is electrically connected to the battery 20 , the motion state sensor 30 , the direction sensor 40 and the light emitting unit 50 . The controller 10 is configured to receive input data from the sensors, execute the control method of the present invention, and generate a driving signal to control the light emitting unit 50 .

[0069] The battery 20 provides power to the entire system and includes a battery management unit 21 . The battery management unit 21 is used to monitor the charge state and health state of the battery 20 and provide its status information to the controller 10 .

[0070] The motion sensor 30, such as a three-axis accelerometer, is used to sense the motion of the lamp and send data indicating the motion to the controller 10. The direction sensor 40, such as an infrared sensor array, is used to determine the user's gaze direction and provide the direction data to the controller 10.

[0071] Reference Figure 4 The light-emitting unit 50 is divided into at least a central region 51 and a peripheral region 52. The central region 51 and the peripheral region 52 can be driven independently by the controller 10. In one embodiment, the light-emitting unit 50 is a multi-spectral light-emitting unit, which includes multiple light-emitting diodes with different spectral characteristics and can be controlled by the controller 10 to synthesize light composed of different spectrums.

[0072] In a specific embodiment, the controller 10 can be a microcontroller (MCU), a digital signal processor (DSP), or a system on a chip (SoC) including a programmable logic device (such as an FPGA). The controller 10 internally includes a non-volatile memory (such as a flash memory) for storing preset parameters and firmware for executing the method.

[0073] In an alternative embodiment, the direction sensor 40 may also be an image sensor mounted on a lamp to capture the user's facial image and use an eye tracking algorithm to determine the gaze direction.

[0074] In one specific embodiment, the multi-spectrum lighting unit 50 is comprised of at least three LED arrays with different peak wavelengths, such as a high-efficiency amber LED array, a high-color rendering index warm white LED array, and a high-color rendering index cool white LED array. The controller 10 synthesizes the target spectrum by pulse-width modulating (PWM) the drive signals of the different LED arrays.

[0075] In a specific embodiment, the controller 10 is configured to execute a method for controlling the long life of a lamp. Figure 2 , Figure 2 This is a flow chart of a method for controlling the long life of a lamp. This method uses real-time sensing of the battery status and user status to perform multi-dimensional coordinated control of the signal driving the light-emitting unit 50, thereby extending the effective working time of the battery 20 while ensuring visual requirements in different scenarios.

[0076] The core of the method is that the controller 10 generates a pulse cluster driving signal to drive the light emitting unit 50. Figure 3 , Figure 3This is a schematic diagram of a pulse cluster drive signal. Each pulse cluster consists of one or more micropulses concentrated within a preset time window, followed by a dark period in which the light-emitting unit 50 is not driven to emit light. The output of the light-emitting unit 50 is controlled by adjusting the number of pulse clusters per unit time, i.e., the pulse cluster density.

[0077] Reference Figure 2 , Figure 2 This is a flow chart of a long-life lamp control method according to one embodiment of the present invention. This method is implemented through a high-frequency, continuously executed closed-loop control process. Within each control cycle, controller 10 sequentially performs a series of operations, including state sensing, parameter calculation, and signal synthesis and driving, to achieve real-time adaptive control of the light field.

[0078] The closed-loop control process begins with state sensing. At the start of each control cycle, the controller 10 collects a set of raw state data from the system's various sensors and units through its input interfaces. This data includes: the current charge state of the battery 20, obtained from the battery management unit 21; triaxial acceleration data representing the current intensity of the luminaire's motion, obtained from the motion state sensor 30; and a raw signal indicating the user's gaze direction, obtained from the direction sensor 40.

[0079] The second stage of the closed-loop control process is collaborative control parameter calculation. In this stage, the controller 10 uses the raw data acquired during the state perception phase as input and processes it through an internally pre-set algorithm model to calculate a series of intermediate control parameters for light field modulation. This process first calculates a base pulse cluster density based on the battery's state of charge, which is used to set the system's baseline energy consumption. Simultaneously, a quantized motion state value is calculated based on the triaxial acceleration data, and this value is used to determine whether dynamic safety density should be enabled to ensure visual stability. The controller 10 then combines the base density with the safety density to generate a dynamically compensated pulse cluster density. Finally, based on the gaze direction data, the controller 10 determines a spatial factor for each of the central region 51 and peripheral region 52 of the light-emitting unit 50. This spatial factor is used to adjust the dynamically compensated pulse cluster density, generating a final pulse cluster density for each region.

[0080] The third stage of the closed-loop control process is multi-dimensional signal synthesis and driving. In this stage, the controller 10 synthesizes the final pulse cluster density calculated in the previous stage and other control strategies (such as the spectrum composition strategy set for different regions) into a physical electrical signal that can directly drive the light-emitting unit 50. Figure 3Based on the final pulse cluster density for each region, the controller 10 generates a pulse cluster drive signal sequence with corresponding temporal density characteristics. While generating the signal, the controller 10 also adjusts the parameters of the drive signal acting on different color channels according to a preset spectral strategy to shape the target spectral composition. The generated pulse cluster drive signal is then sent to the driver circuit of the light-emitting unit 50, driving the central region 51 and the peripheral region 52 to emit light respectively.

[0081] In a specific embodiment, the frequency at which the controller 10 executes the closed-loop control process is set to be above 100 Hz to ensure timely response to changes in user movement and gaze direction, and to avoid perceptible delays.

[0082] The complete process from state sensing to signal driving constitutes an independent control cycle. The controller 10 repeatedly executes this control cycle at a preset control frequency, thereby forming a closed-loop control system that can continuously respond to changes in internal power and external user status.

[0083] Reference Figure 1 and Figure 2 , the controller 10 performs a state sensing operation at the beginning of each control cycle to obtain all the input data required for subsequent parameter solution.

[0084] The controller 10 first obtains the charging state of the battery 20 of the lamp. In a specific embodiment, the controller 10 sends a data request instruction to the battery management unit 21 through a preset communication interface, such as an I2C bus or an SMBus bus. After receiving the instruction, the battery management unit 21 sends the currently measured battery charging state E to the battery management unit 21. SoC The response data is returned to the controller 10. Charging state E SoC It is a normalized value ranging from 0 to 1, where 1 indicates that the battery is fully charged and 0 indicates that the battery is exhausted.

[0085] The controller 10 then acquires the motion state of the lamp. The motion state sensor 30, such as a built-in triaxial accelerometer, continuously monitors and outputs the acceleration components of the lamp along three mutually perpendicular axes. The controller 10 reads the acceleration data along the X, Y, and Z axes and calculates the vector magnitude based on the acquired triaxial acceleration data, using the vector magnitude as a unified, quantified motion state indicator. The vector magnitude calculation formula is:

[0086]

[0087] Where: A mag is the vector amplitude of the motion state; a x is the acceleration component of the lamp in the X-axis direction; ay is the acceleration component of the lamp in the Y-axis direction; a z is the acceleration component of the lamp in the Z-axis direction.

[0088] At the same time, the controller 10 obtains the user's gaze direction. In one embodiment, the direction sensor 40 includes an infrared emitter and an infrared imaging sensor. The infrared emitter emits infrared light to the user's eye area, and the infrared imaging sensor receives and captures the infrared spot image reflected back from the user's cornea. The controller 10 processes the captured image and calculates the coordinates of the light spot on the sensor's photosensitive plane. The controller 10 pre-stores a coordinate range for defining the central area 51 and the peripheral area 52 of the light-emitting unit 50. The controller 10 compares the calculated light spot coordinates with the pre-stored coordinate range. If the light spot coordinates fall within the coordinate range of the central area 51, it is determined that the current gaze direction is pointing to the central area; otherwise, it is determined that the gaze direction is pointing to the peripheral area.

[0089] Reference Figure 1 and Figure 2 After completing the state perception, the controller 10 enters the collaborative control parameter solution stage. In this stage, the controller 10 uses the acquired charging state E SoC , motion state vector amplitude A mag And the user's gaze direction, through a series of calculations, solves the various control parameters for ultimately driving the light-emitting unit 50.

[0090] Reference Figure 5 , Figure 5 FIG. 1 is a schematic diagram showing the relationship between the pulse cluster basic density and the battery charging state according to an embodiment of the present invention. Figure 5 As shown, as the battery charge state E SoC From 1 to 0, the controller 10 calculates the basic density D according to the endurance model. base Also correspondingly from the maximum value D max Decays non-linearly, resulting in more significant energy savings in the later stages of battery life.

[0091] First, the controller 10 obtains the charging state E SoC , a preset endurance model is used to determine the basic density D of the pulse cluster for endurance priority base This model maps the remaining battery power to a basic pulse density value to achieve the goal of smoothly reducing basic energy consumption as the power level decreases. The calculation formula of the battery life model is:

[0092]

[0093] Where: D base is the basic density of the pulse cluster; D maxis the maximum basic density, a preset constant, representing the pulse cluster density when the battery is fully charged; e is a natural constant; α is a preset attenuation coefficient, a positive real number used to control the attenuation rate of the pulse cluster density as the battery power decreases; E SoC is the normalized value of the state of charge obtained from the battery management unit 21.

[0094] At the same time, the controller 10 internally stores a preset fixed value as a dynamic safety density D for eliminating motion visual discomfort. safe This value is set to ensure that the density of pulse clusters does not fall below the minimum required to ensure visual continuity, even when the luminaire is moved.

[0095] Next, the controller 10 sets the basic density D of the pulse cluster to base and dynamic safety density D safe The fusion is performed to generate the dynamic compensated pulse cluster density D comp The fusion process is composed of the motion state vector amplitude A mag To prevent light output jitter in critical motion conditions, the fusion process uses a hysteresis control mechanism, which is activated by a motion threshold T active and a motion inactivation threshold T inactive Implementation, where T active Greater than T inactive When the controller 10 detects A mag More than T active When the controller 10 performs a fusion operation, D base and D safe The larger value of D comp . When A mag Lower than T inactive When the controller 10 stops performing the fusion operation, it directly sets D base As D comp This mechanism ensures the stability of system state transitions when entering and exiting dynamic compensation mode.

[0096] Finally, the controller 10 adjusts the dynamic compensated pulse cluster density D according to the acquired user gaze direction. comp The controller 10 sets a spatial factor C for the central area 51 and the peripheral area 52 of the light emitting unit 50 respectively. gaze When the gaze direction points to the central area 51, the controller 10 assigns a higher spatial factor value to the central area 51 and a lower spatial factor value to the peripheral area 52; vice versa. comp As input, using the spatial factor C gaze Calculate the final pulse cluster density D for each region final The calculation formula is:

[0097] D final =D comp ×C gaze ;

[0098] Where: D final To obtain the final pulse cluster density, this calculation is performed once for the central region and once for the peripheral region; D comp is the pulse cluster density after dynamic compensation; C gaze is the spatial factor of the corresponding area.

[0099] In a non-limiting example, the spatial factor C for the central region 51 is gaze The value of C can be set to 1.0 for the spatial factor C of the peripheral region 52 gaze The value of can be set to 0.3. At the same time, the motion activation threshold T active It can be set to 1.5g (g is the acceleration due to gravity), the motion inactivation threshold T inactive These parameters can be pre-stored in the non-volatile memory of the controller 10 .

[0100] After this step, the controller 10 obtains two independent final pulse cluster density values, one for driving the central area 51 and the other for driving the peripheral area 52 .

[0101] Reference Figure 1 、 Figure 3 and Figure 4 After the collaborative control parameter calculation phase is completed, the controller 10 converts the calculated final pulse cluster densities for the central area 51 and the peripheral area 52 into physical electrical signals for driving the light-emitting unit 50.

[0102] The pulse cluster driving signal generated by the controller 10 has a specific structure in the time domain. Figure 3 The drive signal consists of a series of pulse clusters, each of which consists of one or more micropulses with a duration on the order of microseconds. These micropulses are concentrated within a preset time window, which is followed by a dark period in which no drive current is supplied to the light-emitting unit 50. Based on the calculated final pulse cluster density, the controller 10 determines the number of pulse clusters generated per unit time. For example, a higher final pulse cluster density value corresponds to more pulse clusters generated per unit time, resulting in a higher perceived brightness in the region of the light-emitting unit 50.

[0103] In one embodiment, when the light emitting unit 50 is a multi-spectral light emitting unit, the controller 10 performs spatial and spectral coordinated modulation. The controller 10 internally stores at least two spectral composition strategies.

[0104] The first spectrum composition strategy is used to drive the central area 51 . This strategy drives a plurality of light-emitting diodes with different spectral characteristics in the light-emitting unit 51 in combination to synthesize light with a higher color rendering index.

[0105] The second spectrum composition strategy is used to drive the peripheral area 52 . This strategy preferentially drives the light-emitting diodes with higher luminous efficiency in the light-emitting unit 52 to provide ambient lighting with lower energy consumption.

[0106] The controller 10 generates two independent pulse cluster driving signals based on the final pulse cluster densities calculated for the central area 51 and the peripheral area 52, and modulates the micropulse parameters driving different color channels in the two signals by applying the first spectrum and the second spectrum composition strategies respectively.

[0107] In a specific embodiment, the controller 10 also performs pulse code modulation of health status information. The controller 10 first obtains the health status information of the lamp from the battery management unit 21, such as the health of the battery or the remaining cycle life. The controller 10 converts this information into a set of microscopic time domain structure parameters through a preset encoding rule. Subsequently, the controller 10 accurately adjusts the time intervals between multiple micropulses within each pulse cluster in the pulse cluster drive signal to be generated based on this set of parameters. For example, a binary data bit 1 is mapped to a longer time interval, and 0 is mapped to a shorter time interval. In this way, the health status information is encoded and loaded into the microscopic time domain structure of the light signal, and this time interval change occurring in the microsecond or nanosecond level will not be perceived by the human eye, and thus will not affect the lighting function.

[0108] In one embodiment, this encoding method based on the time interval between micropulses is pulse position modulation (PPM). To achieve bidirectional information exchange, the lighting system can also include a photodetector for receiving information encoded in the same manner by the external light source, which is then decoded by the controller 10. For example, this can receive synchronization signals from other lighting fixtures or operating instructions from a dedicated configuration device.

[0109] The present invention's long-life lamp control method and system integrates control strategies across multiple dimensions into a collaborative whole. In the time domain, the method directly controls the energy applied to the light-emitting unit 50 by adjusting the density of the pulse clusters. This time-domain control is hierarchical: first, based on the battery 20's state of charge, a long-term baseline density is calculated using a lifespan model. Second, based on the lamp's real-time motion, an instantaneous safety density is superimposed to ensure dynamic visual stability.

[0110] In the spatial domain, the method distributes the energy budget calculated in the time domain unevenly based on the user's gaze direction. The controller 10 divides the light-emitting unit 50 into a central region 51 and a peripheral region 52, allocating a higher pulse cluster density to the area where the user is looking and a lower density to the non-gaze area. This spatial domain control is further coordinated with the spectral domain. The controller 10 configures a spectral composition with a higher color rendering index for the central region 51, which requires high recognition, and a spectral composition with higher luminous efficiency for the peripheral region 52, which provides environmental perception.

[0111] In addition to the aforementioned visible light control, the method also operates in the information domain. By modulating the time intervals between micropulses within each pulse cluster, non-illumination information, such as the lamp's health status, is encoded and loaded into the optical signal. This information domain modulation enables data transmission without affecting the macroscopic illumination effects in the temporal, spatial, and spectral domains. These four dimensions of control are uniformly resolved and executed by the controller 10 within each control cycle, forming a highly integrated control mechanism.

[0112] The system's overall operating mechanism functionally simulates the characteristics of the human visual system. Specifically, the system differentially controls the central region 51 and peripheral regions 52 of the light-emitting unit 50, corresponding to the functions of foveal vision and peripheral vision in the human visual system. The system uses a directional sensor 40 to track the user's gaze point and concentrates high-density, high-color rendering light field resources in the central region 51, providing the user with a high-definition central field of view. Simultaneously, lower-density, high-efficiency lighting is provided to the peripheral region 52 to maintain environmental awareness. This on-demand allocation of light field resources avoids the energy waste associated with uniformly high-quality lighting across the entire field of view.

[0113] At the same time, the entire system exhibits real-time adaptive characteristics in response to changes in internal and external states. Regarding internal conditions, the system continuously monitors the charge state of the battery 20 and dynamically adjusts the baseline energy consumption level based on these changes, thereby proactively managing battery life. Regarding external conditions, the system responds to the physical movement of the luminaire by switching to a dynamic safety density to ensure visual stability. It also responds to changes in the user's gaze direction by adjusting the spatial distribution of the light field energy in real time. These adaptive adjustments are performed by the controller 10 within a unified framework, ultimately forming a lighting control system that continuously optimizes based on its own state and the external environment.

[0114] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for controlling long-life lighting, characterized in that: The method comprises the following steps: S1. Obtain the charging status of the battery of the lamp and the movement status of the lamp; S2. Determine a basic density of pulse clusters for prioritizing battery life based on the charging state, and define a dynamic safety density for eliminating visual discomfort caused by motion; S3. When the motion state exceeds a preset motion threshold, the basic density of the pulse cluster is merged with the dynamic safety density, and the larger value of the basic density of the pulse cluster and the dynamic safety density is used as the dynamically compensated pulse cluster density; otherwise, the basic density of the pulse cluster is directly used as the dynamically compensated pulse cluster density; S4. Obtaining a gaze direction of the user, and determining a spatial factor based on the gaze direction being a central area and a peripheral area of ​​the light-emitting unit of the lamp, and then adjusting the dynamically compensated pulse cluster density using the spatial factor to generate final pulse cluster densities for the central area and the peripheral area, respectively; S5. Generate a pulse cluster driving signal according to the final pulse cluster density to drive the central area and the peripheral area to emit light respectively.

2. The lamp long life control method according to claim 1, characterized in that: In step S1, the step of obtaining the motion state of the lamp includes: Acquire acceleration components of the X-axis, Y-axis, and Z-axis through an acceleration sensor, wherein the acceleration components constitute three-axis acceleration data; The vector amplitude is calculated based on the three-axis acceleration data, and the vector amplitude is used as the motion state of the lamp. The calculation formula of the vector amplitude is: Where: A mag is the vector amplitude of the motion state; a x is the acceleration component of the lamp in the X-axis direction; a y is the acceleration component of the lamp in the Y-axis direction; a z is the acceleration component of the lamp in the Z-axis direction.

3. The lamp long life control method according to claim 1, characterized in that: In step S2, the step of determining the basic density of the pulse cluster for battery life priority based on the charging state includes: Obtaining a battery charge status from a battery management unit of the lamp; Taking the state of charge as input, a basic density of pulse clusters is calculated using a preset endurance model; The dynamic safety density is a preset fixed pulse cluster density value used to ensure visual continuity when the lamp moves.

4. The lamp long life control method according to claim 3, characterized in that: The formula used by the endurance model to calculate the basic density of the pulse cluster is: Where: D base is the basic density of the pulse cluster; D max is the maximum basic density; E SoC is the normalized value of the charging state; α is the preset attenuation coefficient; and e is a natural constant.

5. The lamp long life control method according to claim 1, characterized in that: In step S3, when the motion state exceeds a preset motion threshold, the step of fusing the basic density of the pulse cluster with the dynamic safety density includes: The preset motion thresholds include: a motion activation threshold for activating fusion, and a motion deactivation threshold for releasing fusion, wherein the motion activation threshold is greater than the motion deactivation threshold; If the motion state is greater than the motion activation threshold, the larger value of the basic density of the pulse cluster and the dynamic safety density is used as the pulse cluster density after dynamic compensation; If the motion state is less than the motion inactivation threshold, the base density of the pulse cluster is used as the pulse cluster density after dynamic compensation.

6. The method for controlling long battery life of a lamp according to claim 1, wherein: In step S4, the steps of obtaining the user's gaze direction, determining a spatial factor based on the gaze direction being the central area and the peripheral area of ​​the light-emitting unit of the lamp, and then using the spatial factor to adjust the density of the dynamically compensated pulse clusters include: Setting a spatial factor for the central region and the peripheral region respectively according to the gaze direction; The area pointed by the gaze direction has a set spatial factor value greater than the set spatial factor value of another area; The final pulse cluster density of the central area and the final pulse cluster density of the peripheral area are calculated respectively. The calculation formula of the final pulse cluster density is: D final =D comp ×C gaze ; Where: D final is the final pulse cluster density; D comp is the pulse cluster density after dynamic compensation; C gaze The spatial factors are set for the central area and the peripheral area respectively, wherein the spatial factor value for the central area is greater than the spatial factor value for the peripheral area.

7. The lamp long life control method according to claim 1, characterized in that: In step S5, the step of generating a pulse cluster driving signal according to the final pulse cluster density includes: determining the number of pulse clusters generated per unit time based on the final pulse cluster density; Each pulse cluster in the pulse cluster driving signal is composed of one or more micropulses with a duration of microseconds and a subsequent dark time, during which no driving current is provided to the light-emitting unit; The light emitting unit is a multi-spectrum light emitting unit.

8. The method for controlling long battery life of a lamp according to claim 7, wherein: In step S5, the steps of driving the central area and the peripheral area to emit light respectively include: Obtaining health status information from a battery management unit of the lamp; encoding the health status information into a set of microscopic time-domain structure parameters; The time intervals between the multiple micropulses in each pulse cluster in the pulse cluster driving signal are modulated according to the microscopic time domain structure parameters.

9. The method for controlling long battery life of a lamp according to claim 1, wherein: In step S5, the steps of driving the central area and the peripheral area to emit light respectively further include: Setting a first spectrum composition having a higher color rendering index for the central area; Setting a second spectrum composition with higher luminous efficiency for the peripheral area; The central region is driven to emit light according to the first spectrum composition, and the peripheral region is driven to emit light according to the second spectrum composition.

10. A long-life lamp control system, applied to the method according to any one of claims 1 to 9, characterized in that: The system comprises: A light-emitting unit comprising a central area and a peripheral area; a battery; a motion state sensor; a direction sensor; and a controller configured to: Acquiring the charging state of the battery and the motion state of the lamp sensed by the motion state sensor; Determining a base density of pulse clusters for endurance priority based on the state of charge, and defining a dynamic safety density for eliminating motion visual discomfort; When the motion state exceeds a preset motion threshold, the basic density of the pulse cluster is merged with the dynamic safety density, and the larger value of the basic density of the pulse cluster and the dynamic safety density is used as the dynamically compensated pulse cluster density; otherwise, the basic density of the pulse cluster is directly used as the dynamically compensated pulse cluster density; Obtaining a gaze direction of the user sensed by the direction sensor, and determining spatial factors for a central area and a peripheral area of ​​the light-emitting unit according to the gaze direction, and adjusting the dynamically compensated pulse cluster density using the spatial factors to generate final pulse cluster densities for the central area and the peripheral area respectively; A pulse cluster driving signal is generated according to the final pulse cluster density to respectively drive the central area and the peripheral area to emit light.

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